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Patented March 15,1881.

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M. STONE-HOUSE,- Knuckle Joint Action for Presses, 8w. No. 238,983, Patented March 15, 18 81.

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(ModeL) M. STONEH-OUSE. Knuckle Joint Action for'Presses, &o. No. 238,983. Patented March 15,1881.

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MARSHALL STONEHOUSE, OF SOUTH STOGKTON-ON-TEES, COUNTY OF YORK,

- ENGLAND.

KNUCKLE-JOINT ACTION FOR PRESSES, 80C.

SPECIFICATION forming part of Letters Patent No. 238,983, dated March 15, 1881.

Application filed October 25, 1880. (ModeL). Patented in England April 27, 1880.

To all whom it may concern Be it known that I, MARSHALL STONE HOUSE, of South Stockton on Tees, in the county of York, England, have invented new and useful Improvements in Knuckle-Joint Actions for Presses and other Pressing or Forcing Apparatus, (for which I have obtained a patent in Great Britain on the 27th day of April, 1880, No. 1,723,) of Which the following is a specification.

The object of this invention is to obviate the. disadvantages inh erentin knuckle-j oint or toggle actions as heretofore usually made, and to give the platen or follower, or other equivalent part of a press or other pressing or forcing apparatus, any required length of travel with a force or pressure as near as may be equal throughout. I give the knuckle-joint arms reciprocating motion by any suitable means, and combine the said arms with the stationary head, with a sliding head,"and with the platen or follower, the latter being connccted to a pressing-screw having nuts which are caused to revolve; or there may be more than one sliding head or more than one screw.

In the drawings, Figure l is a front elevation of my improved press, partly in section. Fig. 2 is a side elevation ofthe same. Fig.3 is a sectional plan, showing the eccentrics, shafts, and driving-wheels. Fig. 4 is a sectional plan, showing the screw-shaft and sliding head. Fig.5 is a sectional plan, and Fig. 6 an elevation, of an arrangement by means of which both toggle-arms can be operated from one shaft. Fig. 7 is a front elevation, and'Fig. 8 a plan, partially in section, of a modified form of this press, in which gearing is used for communicating power and motion to the parts. Fig. 9 is an elevation, and Fig. 10 a plan, partially in section, of a simpler form of press, the actuating-shaft in which can be run slowly and powerfully when applying the pressure in-the press, or more rapidly in returning the parts to their normal position.

The shaft 1; is caused to revolve by belt on the pulley q, and has a right-hand worm, 0, and a left-hand worm, 0, which impart slower revolving motion to the worm-wheels m and m on the shaftsl and 1, respectively. These latter have eccentrics k, which work in blocks slide.

70, whereon the connecting-pieces k are free to To the latter are jointed the togglearms a and a. i The upper ends of the arms at and a are jointed to the stationary presshead H, and the lower ends to the sliding down; and o is the platen or follower on the bottom end of the screw 61.

Underneath the sliding heads 6 and 0 there are two nuts, I) and b, working on the screw (1. These nuts are formed as toothwheels, as shown, and are caused to revolve intermittently and alternately by means of the toothsectors b If, or pinions having teeth on only part of their circumference, as shown clearly in Fig. 4c, and they are somewhat deeper than the nut-wheels b and I). These are mounted on the vertical spindle b, which is revolved by chain, strap, or pulley gear either in'one direction or the other, right-round orleft;round, from the shaft 1 or the shaft Z,-which latter revolve continuously in opposite directions, as shown by the arrows, Fig. 1.

g is a clutch sliding on a feather on the shaft 1), and, by means of the lever a, capable of being thrown into gear with the loose chainpulley f or t. The pulley f is driven at a quick speed from the pulley f 2 on the shaft Z,

the driving-chain passing also over the guidepulley or on the spindle Z1 and the guide-pulley at on the spindle l. The pulley t is driven at a slow speed from the pulley f on shaft 2, as shown in plan View, Fig. 3.

To insure a regular and reliable motion of the sliding heads a and e and corresponding action or gearing of the sector-pinions b b with the right teeth or the same teeth of their nut-wheels b and b at each revolution of the shaft b, it is necessary for this purpose that each nut b and b have a star-wheehy, and each sector-pinion b b a corresponding cam, z, gearing therewith, as shown in Fig. 4., i

The driving-shaft 19 being caused to revolve,

the shafts l and l are driven in opposite directions by the worms 0 and 0 and worm-wheels m and m. The reciprocating motion imparted by the eccentrics to the blocks k and connecting-pieces 70 causes the toggle-arms a a. to bend and straighten alternately, and so move the screw 61 and platen o downward. The clutch g, by a lever shown in dotted lines, Fig. 1, is thrown into gear. with the chain-pulley 25, causing the shaft b to turn round from right to left. The tooth sector-pinions b b will each in its turn impart part of a left-to-right revolution to the nuts I) and b, respectively, the cams z and star-wheels y retaining them securely in that position until they are again moved by the toothed sectors 1) and b The nut-wheels, being revolved from the left to the right, will thus rise, while the sliding heads 6 and e are raised alternately by the bending toggle-arms a a. The screw d and follower e, not being able to turn, will remain stationary until, on the downstroke caused by the straightening toggle-arms, said screw cl will be forced down with the sliding heads 66 and through the stationary head H, and so the movements are repeated alternately. When the platen c has traveled the required stroke, (which may be any desired length,) the clutch g is thrown out of gear with the pulley 25 automatically or by hand. The platen 0 may now be brought up quickly by throwing the clutch g in gear with the pulley f, whereby the nut-wheels I) b are revolved in the opposite direction, causing the platen c to rise with the screw d.

w is the receptacle into which the material to be compressed is placed.

The arms a a may, if desired, be worked from one shaft having three eccentrics, and on in Figs. 5 and 6, the other parts of the press.

being constructed and operating the same as described, and shown by Figs. 1 to 4, inclusive.

Figs. 7 and 8 show a press in which the spindle I) is caused to revolve by means of bevelgear with a slow motion and a quick motion.

On the shaft 12 of the slow-motion strap-pulley q are right and left hand worms or screws 0 0, gearing into worm-wheels m m on the shafts l l, for working the eccentrics. On the shaft 1 there is a miter-wheel, f which gears with a miter-wheel, f and on the spindle of the latter there is a miter-wheel,f, which gears with a miter-wheel, f, on the "ertical spindle b communicating the slow descending motion to the screw 01 and platen v by means of the tooth sector-wheels b and b on the spindle b said sector-wheels alternately communicating a partial revolving motion to the nut-wheels b and b on the screw d, causing the latter to descend slowly in the same way as described with reference to Figs. 1 to 4, only that in this case I employ one sliding head 6 only, instead of two, the nut-wheels b working against the stationary head H and the nut-wheel 1) against the sliding head 6.

q is the pulley for the quick-motion shaft 2, which is broughtinto action by suitable means when the quick down or up motion is required for the screw 61 and follower c.

On the shaft 10 there is a sliding clutch, g, for bringing the shaft 19 in fixed connection with the miter-wheel 0' or the miter-wheel 4", thereby causing the eccentric-sh aft l to revolve in one direction or the other, for lowering or raising the screw 01 rapidly, and, by the spurwheels t t 25 15*, to communicate motion to the other eccentric-shaft, Z, which acts on the spindle b. The shafts land I haveclutchesM and M, for putting in gear the worm-wheel m and m, according as required in working the press by a slow or a quick motion through the quickmotion pulleyqorthe slow-motionpulleyq. By the above arrangement it will be seen that the screw d may be given varied speed for the downstroke or upstroke.

A plan of a much simpler arrangement of press is shown in Figs. 9 and 10, in which the speed is uniform throughout the upstroke and the downstroke of the screw d, but where, by the driving-strap-pulley arrangement outside of the press itself, the screw (1 may nevertheless receive uniformly slow descent and uniformly quick ascent 5 or, if desired, by means of cone-pulleys outside of the press itself, the

pulleys at each end, one belt being open and the other crossed, so that it may receive a right-hand or left-hand revolving motion-one for the ascent and the other for the descent of the screw d. The worms 0 and o, gearing with the worm-wheels m and m, cause the eccentric-shafts Z and l to revolve as before. The vertical spindle b receives motion from the shaft 1 by means of the miter-wheels ff f f It will thus be seen that the miterwheels 1" r,(shown in Figs. 7 and 8,) and also the spur-wheels t t t t and clutches M M, are omitted.

The arms may be connected directly to the platen and the gearing be between the upper ends of arms and the head-block.

The. press may obviously be arranged vertically inverted or horizontal.

For obtaining a quick ascent or descent I may, by suitable gear, cause the barrel (1 to revolve and so screw it up through the nutwheels I) and b 1 claim as my invention 1. The toggle-arms a a, stationary head H,

IIO

and slidingheads 00, in combination with the alternately-revolved nut-wheels b b, pressingscrew d, and platen t, to which heads and nut-wheels alternate step-by-step motions are communicated, substantially as described.

2. The toggle-arms a a, sliding heads 0 e, and nut-wheels b b, in combination with the motive spindle b toothed sector-wheels 12 b cams z, and star-wheels 3 said parts communicatingan alternate step-by-step and descend ing or ascending motion to the screw 01 and platen a, substantially as described.

3. The toggle-arms a, in combination with the stationary hcadH and sliding head e, and the alternately revolved nut wheels b b, screwed cams z, and gearing, substantially as described. it

4. In combination with a pressing-screw, d,

and the two nut-wheels I) 11 thereof, toggle-arms a a, a follower mechanism for actuating the toggle-arms, and means for turning the nutwheels I) b alternately when the strain is relieved from such nut-wheels, substantially as I 5 specified.

MARSHALL STONEHOUSE. Witnesses:

W. W. ScoTT,

GEO. LAMB SCOTT. 

